Toilet seat!
Im with you Mooshie, potties gross me out as well.
With DD (long ago now) i tried the potty, she would only sit on it in the loungeroom in front of the TV, i hated the idea of her doing it there and she ended up being to distracted to go anyway. (i tried to put it into the bathroom / toilet area but she'd carry it out) I brought the seat and she used it first try, kept telling me she was a big girl like mummy. I also brought one for my parents house as they babysat sometimes. From then on all good - she was toilet trained by two.